TypeError - grow()

[Daniwin82]

my code:
newregion = r.grow(r.x,r.y,300,10)

error:
TypeError: grow() takes from 2 to 3 positional arguments but 5 were given

accoring to the docs the last option of grow allows 4 arguments
https://lackey.readthedocs.io/en/latest/lackey.html#lackey.Location.grow

Lackey code: seems to expect only 2 argument:
def grow(self, width, height=None):

Either the code or the documentation needs updating...

NOTE: I prefer the grow method to accept 4 argument (left, right, top, bottom),...since I used it in this way in my previous sikuli scripts. OR Is there an alternative to grow a region only in one direction? So, something like grow(0,200,0,0)